1//////////////////////////////////////////////////////////////////////////////
2//
3// (C) Copyright Ion Gaztanaga 2005-2015. Distributed under the Boost
4// Software License, Version 1.0. (See accompanying file
5// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6//
7// See http://www.boost.org/libs/interprocess for documentation.
8//
9//////////////////////////////////////////////////////////////////////////////
10
11#ifndef BOOST_INTERPROCESS_DETAIL_WORKAROUND_HPP
12#define BOOST_INTERPROCESS_DETAIL_WORKAROUND_HPP
13
14#ifndef BOOST_CONFIG_HPP
15# include <boost/config.hpp>
16#endif
17#
18#if defined(BOOST_HAS_PRAGMA_ONCE)
19# pragma once
20#endif
21
22#if defined(BOOST_INTERPROCESS_FORCE_NATIVE_EMULATION) && defined(BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION)
23#error "BOOST_INTERPROCESS_FORCE_NATIVE_EMULATION && BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION can't be defined at the same time"
24#endif
25
26//#define BOOST_INTERPROCESS_FORCE_NATIVE_EMULATION
27
28#if defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
29 #define BOOST_INTERPROCESS_WINDOWS
30 #if !defined(BOOST_INTERPROCESS_FORCE_NATIVE_EMULATION) && !defined(BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION)
31 #define BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION
32 #endif
33 #define BOOST_INTERPROCESS_HAS_KERNEL_BOOTTIME
34#else
35 #include <unistd.h>
36
37 //////////////////////////////////////////////////////
38 //Check for XSI shared memory objects. They are available in nearly all UNIX platforms
39 //////////////////////////////////////////////////////
40 #if !defined(__QNXNTO__) && !defined(__ANDROID__) && !defined(__HAIKU__) && !(__VXWORKS__) && !(__EMSCRIPTEN__)
41 #define BOOST_INTERPROCESS_XSI_SHARED_MEMORY_OBJECTS
42 #endif
43
44 //////////////////////////////////////////////////////
45 // From SUSv3/UNIX 98, pthread_mutexattr_settype is mandatory
46 //////////////////////////////////////////////////////
47 #if defined(_XOPEN_UNIX) && ((_XOPEN_VERSION + 0) >= 500)
48 #define BOOST_INTERPROCESS_POSIX_RECURSIVE_MUTEXES
49 #endif
50
51 //////////////////////////////////////////////////////
52 // _POSIX_THREAD_PROCESS_SHARED (POSIX.1b/POSIX.4)
53 //////////////////////////////////////////////////////
54 #if defined(_POSIX_THREAD_PROCESS_SHARED) && ((_POSIX_THREAD_PROCESS_SHARED + 0) > 0)
55 //Cygwin defines _POSIX_THREAD_PROCESS_SHARED but does not implement it.
56 #if defined(__CYGWIN__)
57 #define BOOST_INTERPROCESS_BUGGY_POSIX_PROCESS_SHARED
58 #elif defined(__APPLE__)
59 //The pthreads implementation of darwin stores a pointer to a mutex inside the condition
60 //structure so real sharing between processes is broken. See:
61 //https://opensource.apple.com/source/libpthread/libpthread-301.30.1/src/pthread_cond.c.auto.html
62 //in method pthread_cond_wait
63 #define BOOST_INTERPROCESS_BUGGY_POSIX_PROCESS_SHARED
64 #endif
65
66 //If buggy _POSIX_THREAD_PROCESS_SHARED is detected avoid using it
67 #if defined(BOOST_INTERPROCESS_BUGGY_POSIX_PROCESS_SHARED)
68 #undef BOOST_INTERPROCESS_BUGGY_POSIX_PROCESS_SHARED
69 #else
70 #define BOOST_INTERPROCESS_POSIX_PROCESS_SHARED
71 #endif
72 #endif
73
74 //////////////////////////////////////////////////////
75 // BOOST_INTERPROCESS_POSIX_ROBUST_MUTEXES
76 //////////////////////////////////////////////////////
77 #if (_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L)
78 #define BOOST_INTERPROCESS_POSIX_ROBUST_MUTEXES
79 #endif
80
81 //////////////////////////////////////////////////////
82 // _POSIX_SHARED_MEMORY_OBJECTS (POSIX.1b/POSIX.4)
83 //////////////////////////////////////////////////////
84 #if ( defined(_POSIX_SHARED_MEMORY_OBJECTS) && ((_POSIX_SHARED_MEMORY_OBJECTS + 0) > 0) ) ||\
85 (defined(__vms) && __CRTL_VER >= 70200000)
86 #define BOOST_INTERPROCESS_POSIX_SHARED_MEMORY_OBJECTS
87 //Some systems have filesystem-based resources, so the
88 //portable "/shmname" format does not work due to permission issues
89 //For those systems we need to form a path to a temporary directory:
90 // hp-ux tru64 vms freebsd
91 #if defined(__hpux) || defined(__osf__) || defined(__vms) || (defined(__FreeBSD__) && (__FreeBSD__ < 7))
92 #define BOOST_INTERPROCESS_FILESYSTEM_BASED_POSIX_SHARED_MEMORY
93 //Some systems have "jailed" environments where shm usage is restricted at runtime
94 //and temporary file based shm is possible in those executions.
95 #elif defined(__FreeBSD__)
96 #define BOOST_INTERPROCESS_RUNTIME_FILESYSTEM_BASED_POSIX_SHARED_MEMORY
97 #endif
98 #endif
99
100 //////////////////////////////////////////////////////
101 // _POSIX_MAPPED_FILES (POSIX.1b/POSIX.4)
102 //////////////////////////////////////////////////////
103 #if defined(_POSIX_MAPPED_FILES) && ((_POSIX_MAPPED_FILES + 0) > 0)
104 #define BOOST_INTERPROCESS_POSIX_MAPPED_FILES
105 #endif
106
107 //////////////////////////////////////////////////////
108 // _POSIX_SEMAPHORES (POSIX.1b/POSIX.4)
109 //////////////////////////////////////////////////////
110 #if ( defined(_POSIX_SEMAPHORES) && ((_POSIX_SEMAPHORES + 0) > 0) ) ||\
111 ( defined(__FreeBSD__) && (__FreeBSD__ >= 4)) || \
112 defined(__APPLE__)
113 #define BOOST_INTERPROCESS_POSIX_NAMED_SEMAPHORES
114 //MacOsX declares _POSIX_SEMAPHORES but sem_init returns ENOSYS
115 #if !defined(__APPLE__)
116 #define BOOST_INTERPROCESS_POSIX_UNNAMED_SEMAPHORES
117 #endif
118 #if defined(__osf__) || defined(__vms)
119 #define BOOST_INTERPROCESS_FILESYSTEM_BASED_POSIX_SEMAPHORES
120 #endif
121 #endif
122
123 //////////////////////////////////////////////////////
124 // _POSIX_BARRIERS (SUSv3/Unix03)
125 //////////////////////////////////////////////////////
126 #if defined(_POSIX_BARRIERS) && ((_POSIX_BARRIERS + 0) >= 200112L)
127 #define BOOST_INTERPROCESS_POSIX_BARRIERS
128 #endif
129
130 //////////////////////////////////////////////////////
131 // _POSIX_TIMEOUTS (SUSv3/Unix03)
132 //////////////////////////////////////////////////////
133 #if defined(_POSIX_TIMEOUTS) && ((_POSIX_TIMEOUTS + 0L) >= 200112L)
134 #define BOOST_INTERPROCESS_POSIX_TIMEOUTS
135 #endif
136
137 //////////////////////////////////////////////////////
138 // Detect BSD derivatives to detect sysctl
139 //////////////////////////////////////////////////////
140 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
141 #define BOOST_INTERPROCESS_BSD_DERIVATIVE
142 //Some *BSD systems (OpenBSD & NetBSD) need sys/param.h before sys/sysctl.h, whereas
143 //others (FreeBSD & Darwin) need sys/types.h
144 #include <sys/types.h>
145 #include <sys/param.h>
146 #include <sys/sysctl.h>
147 #if defined(CTL_KERN) && defined (KERN_BOOTTIME)
148 //#define BOOST_INTERPROCESS_HAS_KERNEL_BOOTTIME
149 #endif
150 #endif
151
152 //////////////////////////////////////////////////////
153 //64 bit offset
154 //////////////////////////////////////////////////////
155 #if (defined (_V6_ILP32_OFFBIG) &&(_V6_ILP32_OFFBIG - 0 > 0)) ||\
156 (defined (_V6_LP64_OFF64) &&(_V6_LP64_OFF64 - 0 > 0)) ||\
157 (defined (_V6_LPBIG_OFFBIG) &&(_V6_LPBIG_OFFBIG - 0 > 0)) ||\
158 (defined (_XBS5_ILP32_OFFBIG)&&(_XBS5_ILP32_OFFBIG - 0 > 0)) ||\
159 (defined (_XBS5_LP64_OFF64) &&(_XBS5_LP64_OFF64 - 0 > 0)) ||\
160 (defined (_XBS5_LPBIG_OFFBIG)&&(_XBS5_LPBIG_OFFBIG - 0 > 0)) ||\
161 (defined (_FILE_OFFSET_BITS) &&(_FILE_OFFSET_BITS - 0 >= 64))||\
162 (defined (_FILE_OFFSET_BITS) &&(_FILE_OFFSET_BITS - 0 >= 64))
163 #define BOOST_INTERPROCESS_UNIX_64_BIT_OR_BIGGER_OFF_T
164 #endif
165
166 //////////////////////////////////////////////////////
167 //posix_fallocate
168 //////////////////////////////////////////////////////
169 #if (_XOPEN_SOURCE >= 600 || _POSIX_C_SOURCE >= 200112L)
170 #define BOOST_INTERPROCESS_POSIX_FALLOCATE
171 #endif
172
173#endif //!defined(BOOST_INTERPROCESS_WINDOWS)
174
175#if defined(BOOST_INTERPROCESS_WINDOWS) || defined(BOOST_INTERPROCESS_POSIX_MAPPED_FILES)
176# define BOOST_INTERPROCESS_MAPPED_FILES
177#endif
178
179//Now declare some Boost.Interprocess features depending on the implementation
180#if defined(BOOST_INTERPROCESS_POSIX_NAMED_SEMAPHORES) && !defined(BOOST_INTERPROCESS_POSIX_SEMAPHORES_NO_UNLINK)
181 #define BOOST_INTERPROCESS_NAMED_MUTEX_USES_POSIX_SEMAPHORES
182 #define BOOST_INTERPROCESS_NAMED_SEMAPHORE_USES_POSIX_SEMAPHORES
183#endif
184
185#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
186 #define BOOST_INTERPROCESS_PERFECT_FORWARDING
187#endif
188
189// Timeout duration use if BOOST_INTERPROCESS_ENABLE_TIMEOUT_WHEN_LOCKING is set
190#ifndef BOOST_INTERPROCESS_TIMEOUT_WHEN_LOCKING_DURATION_MS
191 #define BOOST_INTERPROCESS_TIMEOUT_WHEN_LOCKING_DURATION_MS 10000
192#endif
193
194
195// Max open or create tries with managed memory segments
196#ifndef BOOST_INTERPROCESS_MANAGED_OPEN_OR_CREATE_INITIALIZE_MAX_TRIES
197 #define BOOST_INTERPROCESS_MANAGED_OPEN_OR_CREATE_INITIALIZE_MAX_TRIES 20u
198#endif
199
200// Maximum timeout in seconds with open or create tries with managed memory segments
201// waiting the creator to initialize the shared memory
202#ifndef BOOST_INTERPROCESS_MANAGED_OPEN_OR_CREATE_INITIALIZE_TIMEOUT_SEC
203 #define BOOST_INTERPROCESS_MANAGED_OPEN_OR_CREATE_INITIALIZE_TIMEOUT_SEC 300u
204#endif
205
206//Other switches
207//BOOST_INTERPROCESS_MSG_QUEUE_USES_CIRC_INDEX
208//message queue uses a circular queue as index instead of an array (better performance)
209//Boost version < 1.52 uses an array, so undef this if you want to communicate
210//with processes compiled with those versions.
211#define BOOST_INTERPROCESS_MSG_QUEUE_CIRCULAR_INDEX
212
213//Macros for documentation purposes. For code, expands to the argument
214#define BOOST_INTERPROCESS_IMPDEF(TYPE) TYPE
215#define BOOST_INTERPROCESS_SEEDOC(TYPE) TYPE
216#define BOOST_INTERPROCESS_DOC1ST(TYPE1, TYPE2) TYPE2
217#define BOOST_INTERPROCESS_I ,
218#define BOOST_INTERPROCESS_DOCIGN(T1) T1
219
220//#define BOOST_INTERPROCESS_DISABLE_FORCEINLINE
221
222#if defined(BOOST_INTERPROCESS_DISABLE_FORCEINLINE)
223 #define BOOST_INTERPROCESS_FORCEINLINE inline
224#elif defined(BOOST_INTERPROCESS_FORCEINLINE_IS_BOOST_FORCELINE)
225 #define BOOST_INTERPROCESS_FORCEINLINE BOOST_FORCEINLINE
226#elif defined(BOOST_MSVC) && (_MSC_VER < 1900 || defined(_DEBUG))
227 //"__forceinline" and MSVC seems to have some bugs in old versions and in debug mode
228 #define BOOST_INTERPROCESS_FORCEINLINE inline
229#elif defined(BOOST_CLANG) || (defined(BOOST_GCC) && ((__GNUC__ <= 5) || defined(__MINGW32__)))
230 //Older GCCs have problems with forceinline
231 //Clang can have code bloat issues with forceinline, see
232 //https://lists.boost.org/boost-users/2023/04/91445.php and
233 //https://github.com/llvm/llvm-project/issues/62202
234 #define BOOST_INTERPROCESS_FORCEINLINE inline
235#else
236 #define BOOST_INTERPROCESS_FORCEINLINE BOOST_FORCEINLINE
237#endif
238
239#ifdef BOOST_WINDOWS
240
241#define BOOST_INTERPROCESS_WCHAR_NAMED_RESOURCES
242
243#ifdef __clang__
244 #define BOOST_INTERPROCESS_DISABLE_DEPRECATED_WARNING _Pragma("clang diagnostic push") \
245 _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")
246 #define BOOST_INTERPROCESS_RESTORE_WARNING _Pragma("clang diagnostic pop")
247#else // __clang__
248 #define BOOST_INTERPROCESS_DISABLE_DEPRECATED_WARNING __pragma(warning(push)) \
249 __pragma(warning(disable : 4996))
250 #define BOOST_INTERPROCESS_RESTORE_WARNING __pragma(warning(pop))
251#endif // __clang__
252
253#endif
254
255#if defined(BOOST_HAS_THREADS)
256# if defined(_MSC_VER) || defined(__MWERKS__) || defined(__MINGW32__) || defined(__BORLANDC__)
257 //no reentrant posix functions (eg: localtime_r)
258# elif (!defined(__hpux) || (defined(__hpux) && defined(_REENTRANT)))
259# define BOOST_INTERPROCESS_HAS_REENTRANT_STD_FUNCTIONS
260# endif
261#endif
262
263#include <boost/core/no_exceptions_support.hpp>
264
265#endif //#ifndef BOOST_INTERPROCESS_DETAIL_WORKAROUND_HPP
266

source code of boost/libs/interprocess/include/boost/interprocess/detail/workaround.hpp